Rod and piston packing



(No Model.) 2 Sheets-Sliet 1; O. O. JEROME.

. R01) AND PISTON PAGKING. 1 No. 344,908. Patented July 6, 1886.

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(No Model.) 2 sheets-sheet 2.

C. C. JEROME.

BOD AND PISTON PACKING.

No. 344,908. Patented July 6, 1886.

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CHARLES C. JEROME, OF CHICAGO, ILLINOIS.

HUD AND PISTON PACKING.

i GPECIFICATION forming part of Letters Patent N0. 344,908, dated July6, 1886.

Application filed May 14, 1886. Serial NO-QOQJTQ.

To all whom it may concern:

Be itknown that I, CHARLES C. JEROME, of Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Rod and Piston Packings; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to an improvement in rod or piston packing.

Hitherto when a'reciprocating rod has become worn hollowing or out oftrue it has been found almost or quite impossible to keep it effectuallypacked, and particularly so by means of metallic packing. It has furtherbeen found more or less difficult to secure a packing-ring of the formhitherto employed which will admit of taking up the desired amount ofwear and at the same time present an extended and steam-tight bearingcompletely around the piston and against the face of the socket in thegland.

The object of my present invention is to provide a packing-ringconsisting of an inner and outer section adapted to break joints witheach other and to be compressed.

A further object is to provide a set of springactuated compressors whichshall automatically compress the packingrings into close contact withthe rod or piston and into contact with the face of the gland-socket.

A further object is to provide means for packing joints about areciprocating rod against the passage of steam, air, or gas which shallbe effective, inexpensive, and convenient.

Vith these ends in view my invention consists in certain features ofconstruction and combinations of parts, as will be hereinafterdescribed, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a longitudinal section throughthe end of a steam-chest or valve-chamber, showing the application ofthe packing to a valve-stem. Fig. 2 is a detached view of the face-plateor gland and compressor-sections adapted to fit therein, and Figs. 3 and4-. are detached views of the packing-ring. Fig. 5 represents a modifiedconstruction of ring and compressor- Section.

(No model.)

A represents the head of a steam-chest or valve-chamber, through whichthe valve-stem 13 extends. O is the stuffing-box, secured firmly to thehead A around the valvestem B, and c is the gland which secures thepacking Within the stuffing-box. The gland c is fitted steam-tight tothe end of the box 0, and is adapted to be secured thereto by draw-boltsor other suitable means. It is also provided with a socket orcylindrical recess, D, which corresponds in diameter to the recess inthe box 0, and forms, when in position, a continuation of the same.

The packing-ring consists of an outer metal tic section, E, of brass,for example, and an inner metallic section, F, of Babbitt or other softmetal. The outer section, E, is provided on its inner face with anannular groove, 6, and on its outer face it is rabbeted out on the edgetoward the gland c, as shown ate, and is beveled on its opposite edge,as shown at c. The inner section, F, of soft metal, is molded within thesection E, the metal filling the groove 0, and having a thickness whichwill admit of the ring being cut out and faced to fit any sized rod ofthe class for which it is intended. The ring thus constructed is cutthrough both sections, as shown in Fig. 3, a short piece being taken outtoadmit of the ring being closed to take up wear as it occurs. The innersection is then slipped around into the position shown in Fig. 4, whichbreaks the joints and yet leaves the rings free to be compressed.

One or more rings of the above construction, preferably two, are placedon the rod or valve-stem B within the socket D of the gland c. A pair ofcompressor sections, G, are adapted to fit within the socket D, betweenthe packing-rings and wall of the socket, and are provided with groovedfaces 9, adapted to conform to the outer faces of the packingrings; butthe grooves are made a little wider than the rings, in order that theremay be room for the rings to slide slightly toward the end of the socketD without engaging the abrupt walls of the groove g. Thecompressor-sections G are each somewhat less than half the periphery ofthe rings in cross-section, to admit of their closing to take up thewear, and are each provided with a rounded elongated lug, g, on itsouter face, which is adapted to work loosely in an annular groove, 0,formed in the wall .of the socket D. They are each further provided withan arm projection, having abeveled face, 9 adapted to engage theinclined face of the follower H. The compressor-sections G are insertedin the socket D by means of channels 0', which lead from the edge of themouth of the socket up to the groove 0, and are adapted to receive therounded elongated lugs g. The sections G, When in position, are hingedin the groove 0, and are free to be rocked toward and away from the rodor valve-stem. The follower H is adapted to slide freely on the rod orvalvestem B within the stuffing-box, and is held inyielding contact,with the arms 9 by means of a stiff spiral spring, I, inserted in thebox between the head of the valve-chamber and the follower. The end ofthe follower toward the valve-chamber has its edge rabbetcd out to forma seat for the spring I, as shown at h,and the end in contact with thearms of the compressor-sections is beveled, as shown at h, the saidbeveled portion of the follower being adapted to engage the beveledfaces of the arms 9. Thus when the gland c is securedin position on thestuffing-box gland, with the packing-rings and compressor-sections inposition within the gland, the pressure of the follower H, tending tospread the arms on the compressor-sections, will, because of thefulcruming of the compressor sections in the groove 0, by means of therounded lugs 9, force the opposite ends of the compressor-sections intocontact with the packing-rings,closing them snugly around the rod orvalve-stem. Furthermore, because of the inclined walls of the groove 9in engagement with the inclined faces 6" of the rings, and the playallowed the rings within the grooves g, thelateral pressure of thecompressor-sections against the rings will at the same time tend toslide the rings along the rod or valve-stem into snug contact with theend wall of the socket in thegland c, and the escape of steam betweenthe end of the ring and the end wall of the said socket will be therebyeffectually prevented.

As the valve-stem, rod, or soft-metal ring becomes worn, thering-sections will be closed, and so free andprompt is the adjustmentofthe ring to the stem or rod that it will adjust itself to differentportions of the same stem or rod, as they are brought in engagementtherewigh by the longitudinal sliding motion ,of the ro In the modifiedconstruction of ring and compressor-section shown in Fig. 5 the edges ofthe ring are both rabbeted out in a manner similar to that shown on theone rabbeted edge of the ring hereinbefore described, and the groove 9is made to conform to the shape of the ring. The pressure of the ringagainst the end wall of the socket is in this construction due to thetension of the spring which actuates the follower, and, while it servesthe purpose quite well in ordinary cases, is not considered as effectiveunder all circumstances as the beveled-edge construction.

The compressorsections may consist of three or more, instead of two, andthey may be constructed of much less width than shown, each reaching notmore than a quarter of the distance around the rings, or even less thanthat, and one or more than two rings might be employed in the place oftwo; or segmental packing-rings of any desired number might be used. Itis evident, also, that numerous other slight changes might be resortedto in the form and arrangements of theseveral parts described withoutdeparting from the spirit and scope of my invention; hence I do notwishto limit myself strictly to the construe tion herein set forth; but,

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a rod or piston packing, a split ring consisting, essentially, ofan exterior metallic section having a groove in its inner surface and aninterior section of softer metal having a rib 011 its outer surface,adapted to enter the groove in the outer section, substantially as setforth.

In a rod or piston packing, a split ring consisting, essentially, of anexterior section and an interior section, one of said sections having arib constructed to engage a groove in the adjacent face of the othersection, the said inner section being free to turn or slideindependently of the outer section, substantially as setforth.

3. In rod or piston packing, the combination, with a packing-ringadapted to surround a rod within a gland, of compressor-sectionsfulcrumed within the gland or stuffing-box, and adapted to compress thepacking-ring into contact with the rod, substantially as set forth.

4. In rod or piston packing, the combination, with a packing-ringadapted to surround a rod within a gland and compressor-sectionsfulcrumed within the gland, of a follower adapted to engage the ends ofthe compressorsections and force the opposite ends of the said sectionsinto contact with the packingring, substantially as set forth.

5. In rod or piston packing, the combination, with a packing-ringprovided with an inclined face, of compressor-sections providedwithinclined faces adapted to engage the ring and force itsimultaneously in both a lateral and longitudinal direction,substantially as set forth.

6. In a rod or piston packing, the combination, with a packing-ringprovided with a beveled edge, of compressor-sections provided withgrooves adapted to loosely conform to the rings and force them into snugcontact with the rod and gland, substantially as set forth.

7. In rod or piston packing, the combination, with the beveled edgedpacking rings adapted to surround the rod within the gland,

ICC

of the compressor-sections fulcrumed within the gland and adapted to beoperated by a spring-actuated follower, substantially as set forth.

5 8. In rod or piston packing, the combination, with the packing-ringssecured on the rod within the gland and the spring-actuated follower, ofthe compressor-sections provided with the hingelugs adapted to work in aIO groove in the wall of the gland-socket, substantially as set forth.

9. The combination, with the stuffing-box gland secured to the end ofthe valve-chainber or steam-chest, of the face-plate or gland securedthereto and provided with an annular I 5 groove shaped to receive thehinge-lug on the compressor-sections, and with channels leading from theend of the gland to the groove, substantially as set forth.

In testimony whereof I have signed this 20 specification in the presenceof two subscribing witnesses.

CHARLES C. JEROME.

Witnesses:

F. R. VAN SLYKE, F. D. SoPER.

